Katy Perry turned up the heat on Instagram this week as she celebrated some good news with fans.The 36-year-old singer posed for two striking photos wearing a soft pink gown that featured a daring thigh-high split.MORE: Katy Perry shares rare photo with her sister - and they look so different WATCH: Katy Perry pushes baby Daisy in her pramWhat's more, she showcased a brand new hair color, debuting a statement orange shade with straightened locks that fell to her waist.